I always have a variety of ducks in my lake. As long as there is open water - ie, not frozen over. Several years ago I even had a Snowy Egret stop in for a couple hours. Blue Herons will stop by to look for a fish or a frog. I don't feed them - they dive and get something where its shallow - on either end.
The little red circle at the far end is the house for my resident family of beavers. They have built a low dam on the outlet and helped maintain a fairly constant level in the lake. View attachment 582601
Moss
How much development around the lakes. Many are filled in with erosion and settling from nearby developments
Moss, i would guess they got filled in due to erosion. It got shallow enough to support cattails.
Ill still argue it is probably a combination. Normal rains bring in silt. Plants grow up in shallow edges, and causes more gunk to accumulate. Never seen a lake with no water running in.Nope. No erosion. And no flowing water. It's a natural process that all lakes succumb to sooner or later.